Best friends Adi and Gabi love to play with Adi's toy train. Round and round it goes--choo choo! Watching it loop the track gives the girls an idea. These scientific thinkers use their computer coding knowledge to put the train to work!

About the Author

Caroline Karanja is a developer and designer who is on a mission to increase accessibility and sustainability through technology. She enjoys figuring out how things work and sharing this knowledge with others.

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Better World Books (https://www.BetterWorldBooks.com) is a for-profit, socially conscious business and a global online bookseller that collects and sells new and used books online, matching each purchase with a book donation. Each sale generates funds for literacy and education initiatives in the U.S., the UK, and around the world. Since its launch in 2003, Better World Books has raised $33 million for libraries and literacy, donated over 32 million books, and reused or recycled more than 397 million books.

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Better World Books Marketplace, Inc.
55740 Currant Road, Mishawaka, IN, 46545, U.S.A.

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Better World Books (BWB) values your satisfaction and offers you returns within thirty (30) days after the estimated delivery date on most items. All returned items must be in the original condition; used items should include the SKU sticker located on the spine or back of the product.

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Order quantity	4 to 8 business days	3 to 5 business days
First item	US$ 0.00	US$ 10.00

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